>From: Matthieu Stigler <[EMAIL PROTECTED]> >Date: 2008/03/03 Mon PM 04:07:09 CST >To: r-help@r-project.org >Subject: [R] How to include an externally defined NULL value in lm
maybe you should a<-0 unless there's special behavior of NULL that's unknownst to me ? >Hello! > >I would love to be able to include an external variable to a lm call, I >mean something: > >if(TRUE) > a<-freeny.x[,4] >else > a<-NULL > >lm(freeny.y~freeny.x[,-4] +a) > >but it does not work with a<-NULL, whereas > >lm(freeny.y~freeny.x[,-4] +NULL) > >I don't understand why and did not find an answer in the manuals... do >you see it? Any idea? > >Thanks!! > >______________________________________________ >R-help@r-project.org mailing list >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
